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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 28, 2012	Sep. 28, 2012	Dec. 30, 2011
Property, plant and equipment, accumulated depreciation	$ 101,525	$ 98,235	$ 95,397
Treasury stock, shares	35,680	516	6,105
Class A [Member]
Common stock, shares issued	8,714,178	8,676,703	8,652,186
Common stock, shares outstanding	8,714,178	8,676,703	8,652,186
Class B [Member]
Common stock, shares issued	1,213,664	1,215,758	1,215,842
Common stock, shares outstanding	1,213,664	1,215,758	1,215,842

X

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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